10460658

Organic Light-Emitting Display Panel and Driving Method Thereof, and Organic Light-Emitting Display Device

PublishedOctober 29, 2019
Assigneenot available in USPTO data we have
Technical Abstract

Patent Claims
16 claims

Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.

Claim 1

Original Legal Text

1. An organic light-emitting display panel, comprising: a pixel matrix including a plurality of pixel driving circuits, wherein the plurality of pixel driving circuits includes a first pixel driving circuit, and a second pixel driving circuit disposed adjacent to the first pixel driving circuit along a row direction of the pixel matrix; a plurality of reference voltage signal lines for providing a reference voltage signal; a plurality of data lines; a plurality of light-emitting signal lines; and a plurality of scanning signal lines including a first and a second scanning signal line, wherein a pixel driving circuit of the plurality of pixel driving circuits includes a driving transistor and is connected to a reference voltage signal line, a first transistor, a second transistor, a third transistor, a first capacitor, a data line, a light-emitting signal line, and a scanning signal line, the first pixel driving circuit is connected to the first scanning signal line, and the second pixel driving circuit is connected to the second scanning signal line, a gate electrode of the first transistor is connected to the light-emitting signal line, a first electrode of the second transistor is connected to the reference voltage signal line, a second electrode of the second transistor is connected to a gate electrode of the driving transistor, a first electrode of the third transistor is connected to the data line, and a second electrode of the third transistor is connected to a first electrode of the driving transistor, a gate electrode of the second transistor and a gate electrode of the third transistor are connected to a same scanning signal line, two plates of the first capacitor are connected to the gate electrode and the first electrode of the driving transistor, respectively, an anode of the organic light-emitting diode is connected to the first electrode of the driving transistor, and a cathode of the organic light-emitting diode is connected to a voltage signal line, and the first and the second pixel driving circuits share a same data line that is configured to time-sharingly provide an initialization signal to the first and the second pixel driving circuits, time-sharingly detect threshold voltages of driving transistors in the first and the second pixel driving circuits, and time-sharingly provide a compensated data signal to the first and the second pixel driving circuits, wherein the pixel driving circuit further includes the organic light-emitting diode and a light-emitting control module; in the pixel driving circuit, the light-emitting control module is configured to charge the driving transistor, and the driving transistor is configured to supply a light-emitting current to the organic light-emitting diode: and the first pixel driving circuit and the second pixel driving circuit share a same light-emitting control module; a first voltage signal line, wherein: the light-emitting control module further includes the first transistor, a first electrode of the first transistor is connected to the first voltage signal line, and a second electrode of the first transistor is connected to a second electrode of the driving transistor; wherein in the same light-emitting control module shared by the first and the second pixel driving circuits, the second electrode of the first transistor is connected to a second electrode of a driving transistor in the first pixel driving circuit and a second electrode of a driving transistor in the second pixel driving circuit.

Plain English Translation

Organic light-emitting display panels use pixel driving circuits to control light emission from organic light-emitting diodes (OLEDs). A common challenge is achieving uniform brightness and color consistency across the display, which can be affected by variations in driving transistor threshold voltages. This invention addresses the issue by sharing components between adjacent pixel driving circuits to reduce circuit complexity and improve efficiency. The display panel includes a pixel matrix with multiple pixel driving circuits, each containing a driving transistor, three additional transistors, a capacitor, and an OLED. Adjacent pixel driving circuits in the same row share a single data line and a single light-emitting control module. The shared data line provides initialization signals, detects threshold voltages of the driving transistors, and supplies compensated data signals in a time-sharing manner. The light-emitting control module, which includes a first transistor, is also shared between adjacent circuits, connecting to the driving transistors of both circuits. This shared configuration reduces the number of components, simplifies the circuit layout, and ensures consistent performance by compensating for threshold voltage variations. The driving transistor in each circuit supplies current to the OLED, while the shared light-emitting control module regulates the charging of the driving transistors. This design optimizes space and power efficiency while maintaining display quality.

Claim 2

Original Legal Text

2. The organic light-emitting display panel according to claim 1 , wherein: in the first pixel driving circuit, a gate electrode of a second transistor and a gate electrode of a third transistor are connected to the first scanning signal line, and in the second pixel driving circuit, a gate electrode of a second transistor and a gate electrode of a third transistor are connected to the second scanning signal line.

Plain English Translation

An organic light-emitting display panel includes multiple pixel driving circuits arranged in an array, each circuit driving an organic light-emitting diode (OLED) to emit light. The panel addresses issues in conventional displays, such as non-uniform brightness and inefficient power consumption, by improving the control of pixel driving circuits. Each pixel driving circuit contains multiple transistors, including a second transistor and a third transistor, which regulate the flow of current to the OLED. In a first pixel driving circuit, the gate electrodes of the second and third transistors are connected to a first scanning signal line, which provides timing signals to control the transistors' operation. Similarly, in a second pixel driving circuit, the gate electrodes of the second and third transistors are connected to a second scanning signal line, allowing independent control of adjacent pixels. This configuration ensures precise timing and synchronization of pixel activation, enhancing display uniformity and reducing power loss. The use of separate scanning signal lines for different pixel circuits enables finer control over pixel brightness and response time, improving overall display performance. The design is particularly useful in high-resolution and high-refresh-rate displays, where precise timing and efficient power management are critical.

Claim 3

Original Legal Text

3. The organic light-emitting display panel according to claim 1 , wherein: the first transistor, the second transistor, and the driving transistor are all N-type transistors.

Plain English Translation

The invention relates to an organic light-emitting display panel, specifically addressing the challenge of improving display performance and reliability by using N-type transistors in the pixel driving circuitry. Organic light-emitting diode (OLED) displays require precise control of current to ensure uniform brightness and longevity. Traditional designs often use a mix of N-type and P-type transistors, which can complicate manufacturing and increase power consumption. This invention solves these issues by employing N-type transistors exclusively for the first transistor, second transistor, and driving transistor within each pixel circuit. The first transistor acts as a switching element, controlling the flow of data signals to the pixel. The second transistor compensates for threshold voltage variations in the driving transistor, ensuring consistent current output regardless of manufacturing inconsistencies. The driving transistor supplies the current to the OLED, directly determining its brightness. By using N-type transistors for all three components, the design simplifies the fabrication process, reduces power consumption, and enhances stability. This configuration also minimizes leakage current, improving display efficiency and contrast. The invention is particularly useful in high-resolution OLED displays where uniformity and energy efficiency are critical.

Claim 4

Original Legal Text

4. The organic light-emitting display panel according to claim 1 , wherein: the plurality of pixel driving circuits includes a plurality of first pixel driving circuits and a plurality of second pixel driving circuits, the plurality of first pixel driving circuits is disposed in a same column of the pixel matrix, the plurality of second pixel driving circuits is disposed in a same column of the pixel matrix, and the first pixel driving circuits is disposed adjacent to the second pixel driving circuits along the row direction of the pixel matrix.

Plain English Translation

This invention relates to an organic light-emitting display panel with an improved pixel driving circuit arrangement. The display panel includes a pixel matrix where each pixel is driven by a dedicated pixel driving circuit. The problem addressed is the efficient arrangement of these circuits to optimize display performance and manufacturing yield. The display panel features a plurality of pixel driving circuits organized into first and second groups. The first group of pixel driving circuits is positioned in a single column of the pixel matrix, while the second group is also placed in a single column. These two groups are arranged adjacent to each other along the row direction of the pixel matrix. This configuration ensures that the driving circuits for adjacent pixels are closely positioned, reducing signal transmission delays and improving synchronization. The arrangement also simplifies the manufacturing process by standardizing the layout of the driving circuits within each column, enhancing production efficiency and reducing defects. The overall design aims to improve display uniformity and reliability while maintaining high-resolution output.

Claim 5

Original Legal Text

5. The organic light-emitting display panel according to claim 4 , wherein: in the pixel matrix, a plurality of pixel driving circuits in a same column is connected to a same data line.

Plain English Translation

Organic light-emitting display panels are used in various electronic devices, but ensuring uniform and efficient pixel driving remains a challenge. This invention addresses the issue by optimizing the electrical connections in the pixel matrix to improve display performance and reduce power consumption. The display panel includes a pixel matrix with multiple pixel driving circuits arranged in rows and columns. Each pixel driving circuit controls the light emission of an organic light-emitting diode (OLED) in a corresponding pixel. To enhance efficiency, the pixel driving circuits in the same column are connected to a single shared data line. This shared connection simplifies the circuit design, reduces the number of data lines required, and minimizes signal interference between adjacent pixels. The shared data line supplies the necessary voltage or current signals to drive the OLEDs in that column, ensuring synchronized and consistent light emission across the display. The pixel driving circuits may include transistors and capacitors to regulate the driving current for the OLEDs. By sharing a data line, the overall circuit complexity is reduced, leading to lower manufacturing costs and improved reliability. This design is particularly useful in high-resolution displays where minimizing wiring congestion is critical. The invention ensures efficient data transmission while maintaining display quality, making it suitable for applications in smartphones, televisions, and other electronic devices.

Claim 6

Original Legal Text

6. The organic light-emitting display panel according to claim 1 , wherein: the plurality of pixel driving circuits includes a plurality of first pixel driving circuits and a plurality of second pixel driving circuits, the plurality of first pixel driving circuits and the plurality of second pixel driving circuits are disposed in a same row of the pixel matrix, and the plurality of first pixel driving circuits and the plurality of second pixel driving circuits are arranged alternately in the row direction of the pixel matrix.

Plain English Translation

An organic light-emitting display panel includes a pixel matrix with multiple pixel driving circuits arranged in rows and columns. The pixel driving circuits control light emission from organic light-emitting diodes (OLEDs) in each pixel. A specific arrangement involves alternating first and second types of pixel driving circuits within the same row of the pixel matrix. The first and second pixel driving circuits are positioned side by side in an alternating sequence along the row direction. This alternating arrangement may improve display uniformity, reduce power consumption, or enhance manufacturing efficiency by balancing electrical characteristics or thermal distribution across the panel. The first and second pixel driving circuits may differ in design, such as transistor configurations, signal processing pathways, or compensation mechanisms, to optimize performance for different pixel types or display functions. The alternating layout ensures that the benefits of both circuit types are distributed evenly across the display, minimizing visual artifacts and improving overall image quality. This arrangement is particularly useful in high-resolution or large-area displays where consistent performance across the entire panel is critical.

Claim 7

Original Legal Text

7. The organic light-emitting display panel according to claim 1 , wherein: in the pixel matrix, pixel driving circuits in odd-numbered columns are first pixel driving circuits, and pixel driving circuits in even-numbered columns are second pixel driving circuits.

Plain English Translation

An organic light-emitting display panel includes a pixel matrix with pixel driving circuits arranged in columns. The pixel driving circuits in odd-numbered columns are first pixel driving circuits, while those in even-numbered columns are second pixel driving circuits. The panel is designed to address issues in conventional organic light-emitting displays, such as power consumption, uniformity, and efficiency. By differentiating the driving circuits between odd and even columns, the display can optimize power distribution, reduce crosstalk, and improve overall performance. The first and second pixel driving circuits may have distinct configurations or operating parameters to enhance display quality and energy efficiency. This arrangement allows for more precise control over pixel activation and brightness, leading to better image consistency and reduced power waste. The panel is particularly useful in high-resolution displays where uniform brightness and low power consumption are critical. The differentiation between odd and even column circuits enables advanced driving techniques, such as staggered scanning or dynamic power management, to further improve display performance.

Claim 8

Original Legal Text

8. An organic light-emitting display device comprising an organic light-emitting display panel according to claim 1 .

Plain English Translation

An organic light-emitting display device includes a display panel with an array of organic light-emitting diodes (OLEDs) arranged in pixels to emit light when electrically activated. The display panel further comprises a substrate, an anode layer, an organic emissive layer, and a cathode layer. The anode and cathode layers are electrically connected to drive circuits that selectively activate individual OLEDs to produce images. The organic emissive layer contains light-emitting materials that emit light when current flows through the OLEDs. The device may also include encapsulation layers to protect the OLEDs from moisture and oxygen, ensuring long-term reliability. The display panel is designed to achieve high brightness, efficiency, and color accuracy while maintaining low power consumption. The device may be used in applications such as televisions, smartphones, and wearable displays, where high-quality visual output is required. The OLED structure allows for flexible, thin, and lightweight display designs compared to traditional liquid crystal displays. The display panel may also incorporate additional layers, such as hole injection layers, electron injection layers, or charge transport layers, to enhance performance. The overall design aims to optimize light emission efficiency, reduce power consumption, and improve durability.

Claim 9

Original Legal Text

9. A driving method of an organic light-emitting display panel including a first pixel driving circuit and a second pixel driving circuit, wherein the first and the second pixel driving circuits are connected to a same data line, a same light-emitting signal line, and a same first voltage signal line, the first pixel driving circuit is connected to a first scanning signal line and a first reference voltage signal line, the second pixel driving circuit is connected to a second scanning signal line and a second reference voltage signal line, and the method comprises: in a first stage, supplying a first voltage level signal to the first scanning signal line and the light-emitting signal line, supplying a second voltage level signal to the second scanning signal line, supplying a reference voltage signal to the first reference voltage signal line, and supplying a first initialization signal to the data line, wherein in the first pixel driving circuit, the first voltage signal line is configured to charge a first electrode of a driving transistor and the data line is configured to detect a voltage of the first electrode of the driving transistor, thereby determining a threshold voltage of the driving transistor in the first pixel driving circuit.

Plain English Translation

This invention relates to driving methods for organic light-emitting display panels, specifically addressing threshold voltage compensation in pixel driving circuits. The method involves two pixel driving circuits sharing a data line, light-emitting signal line, and first voltage signal line, but each connected to separate scanning and reference voltage signal lines. During a first stage, a first voltage level signal is applied to the first scanning signal line and light-emitting signal line, while a second voltage level signal is applied to the second scanning signal line. A reference voltage signal is supplied to the first reference voltage signal line, and an initialization signal is provided to the data line. In the first pixel driving circuit, the first voltage signal line charges a driving transistor's first electrode, and the data line detects this electrode's voltage to determine the driving transistor's threshold voltage. This compensation technique ensures accurate current control for consistent light emission, addressing display uniformity issues caused by transistor threshold voltage variations. The method enables precise threshold voltage detection and compensation in shared-circuit configurations, improving display performance.

Claim 10

Original Legal Text

10. The driving method according to claim 9 , further comprising: in a second stage, supplying the first voltage level signal to the first scanning signal line, supplying the second voltage level signal to the second scanning signal line and the light-emitting signal line, supplying the reference voltage signal to the first reference voltage signal line, and supplying a first data signal after the threshold voltage of the driving transistor in the first pixel driving circuit is compensated to the data line, wherein in the first pixel driving circuit, the reference voltage signal is transmitted to a gate electrode of the driving transistor and the first data signal is transmitted to the first electrode of the driving transistor.

Plain English Translation

This invention relates to a driving method for a display panel, specifically addressing the challenge of compensating for threshold voltage variations in driving transistors within pixel circuits to ensure uniform brightness across the display. The method involves a multi-stage process to stabilize the driving transistor's operation. In a first stage, a reference voltage signal is applied to a reference voltage line, while a first voltage level signal is supplied to a first scanning signal line and a second voltage level signal is supplied to a second scanning signal line and a light-emitting signal line. This initial stage prepares the pixel driving circuit for threshold voltage compensation. In a second stage, the first voltage level signal is maintained on the first scanning signal line, while the second voltage level signal is applied to both the second scanning signal line and the light-emitting signal line. The reference voltage signal is supplied to the first reference voltage signal line, and a first data signal is transmitted to the data line after compensating for the threshold voltage of the driving transistor. Within the pixel driving circuit, the reference voltage signal is directed to the gate electrode of the driving transistor, and the first data signal is applied to the first electrode of the driving transistor. This ensures accurate voltage control, compensating for threshold voltage deviations and improving display uniformity. The method is particularly useful in organic light-emitting diode (OLED) displays where precise current control is critical for consistent brightness.

Claim 11

Original Legal Text

11. The driving method according to claim 10 , further comprising: in a third stage, supplying the first voltage level signal to the second scanning signal line and the light-emitting signal line, supplying the second voltage level signal to the first scanning signal line, supplying the reference voltage signal to the second reference voltage signal line, and supplying the first initialization signal to the data line, wherein in the second pixel driving circuit, a first voltage end is configured to charge a first electrode of a driving transistor and the data line is configured to detect a voltage of the first electrode of the driving transistor, thereby determining a threshold voltage of the driving transistor in the second pixel driving circuit.

Plain English Translation

This invention relates to a driving method for a display panel, specifically addressing the challenge of accurately determining the threshold voltage of a driving transistor in a pixel driving circuit to improve display uniformity and performance. The method involves a multi-stage process to initialize and compensate for variations in transistor characteristics. In a first stage, a first voltage level signal is supplied to a first scanning signal line and a light-emitting signal line, while a second voltage level signal is supplied to a second scanning signal line. A reference voltage signal is provided to a first reference voltage signal line, and a first initialization signal is supplied to a data line. This stage initializes the pixel driving circuit by resetting the voltage levels of the driving transistor and storage capacitor. In a second stage, the first voltage level signal is supplied to the first scanning signal line and the light-emitting signal line, while the second voltage level signal is supplied to the second scanning signal line. The reference voltage signal is provided to the second reference voltage signal line, and the first initialization signal is supplied to the data line. This stage further adjusts the voltage levels to prepare for threshold voltage detection. In a third stage, the first voltage level signal is supplied to the second scanning signal line and the light-emitting signal line, while the second voltage level signal is supplied to the first scanning signal line. The reference voltage signal is provided to the second reference voltage signal line, and the first initialization signal is supplied to the data line. During this stage, a first voltage end of the pixel driving circuit charges a first electrode of the driving transistor. Th

Claim 12

Original Legal Text

12. The driving method according to claim 11 , further comprising: in a fourth stage, supplying the first voltage level signal to the second scanning signal line, supplying the second voltage level signal to the first scanning signal line and the light-emitting signal line, supplying the reference voltage signal to the second reference voltage signal line, and supplying a second data signal after the threshold voltage of the driving transistor in the second pixel driving circuit is compensated to the data line, wherein in the second pixel driving circuit, the reference voltage signal is transmitted to a gate electrode of the driving transistor, and the second data signal is transmitted to the first electrode of the driving transistor, and in a fifth stage, supplying the first voltage level signal to the first and the second scanning signal lines, and supplying the second voltage level signal to the light-emitting signal line, such that a light-emitting element in the first pixel driving circuit and a light-emitting element in the second pixel driving circuit emit light based on the first data signal and the second data signal.

Plain English Translation

This invention relates to a driving method for pixel circuits in display panels, specifically addressing the challenge of compensating for threshold voltage variations in driving transistors to ensure uniform brightness across pixels. The method involves multiple stages to control voltage signals applied to scanning lines, reference voltage lines, and data lines in a display panel with at least two pixel driving circuits. In a fourth stage, the method supplies a first voltage level signal to a second scanning signal line, a second voltage level signal to a first scanning signal line and a light-emitting signal line, and a reference voltage signal to a second reference voltage signal line. Simultaneously, a second data signal is provided to a data line after compensating for the threshold voltage of a driving transistor in a second pixel driving circuit. The reference voltage signal is transmitted to the gate electrode of the driving transistor, while the second data signal is applied to the first electrode of the driving transistor. In a fifth stage, the first voltage level signal is supplied to both the first and second scanning signal lines, and the second voltage level signal is applied to the light-emitting signal line. This enables light-emitting elements in both the first and second pixel driving circuits to emit light based on the first and second data signals, respectively, ensuring accurate and uniform display performance. The method improves display quality by dynamically adjusting for transistor threshold voltage variations during operation.

Claim 13

Original Legal Text

13. A driving method of an organic light-emitting display panel including a first pixel driving circuit and a second pixel driving circuit, wherein the first and the second pixel driving circuits are connected to a same data line, a same light-emitting signal line, and a same first voltage signal line, the first pixel driving circuit is connected to a first scanning signal line and a first reference voltage signal line, the second pixel driving circuit is connected to a second scanning signal line and a second reference voltage signal line, and the method comprises: in a first collection stage, supplying a first voltage level signal to the first scanning signal line and the light-emitting signal line, supplying a second voltage level signal to the second scanning signal line, supplying a first initialization signal to the data line, and supplying a reference voltage signal to the first reference voltage signal line, wherein in the first pixel driving circuit, the first voltage signal line is configured to charge a first electrode of a driving transistor and the data line is configured to collect a voltage of the first electrode of the driving transistor, thereby determining and storing a threshold voltage of the driving transistor in the first pixel driving circuit.

Plain English Translation

This invention relates to driving methods for organic light-emitting display panels, specifically addressing threshold voltage compensation in pixel driving circuits. The technology solves the problem of display uniformity degradation caused by variations in driving transistor threshold voltages across different pixels. The method involves two pixel driving circuits sharing a common data line, light-emitting signal line, and first voltage signal line, but each connected to separate scanning and reference voltage signal lines. During a first collection stage, a first voltage level signal is applied to the first scanning signal line and light-emitting signal line, while a second voltage level signal is applied to the second scanning signal line. A first initialization signal is provided to the data line, and a reference voltage signal is supplied to the first reference voltage signal line. In the first pixel driving circuit, the first voltage signal line charges a driving transistor's first electrode, and the data line collects this electrode's voltage, enabling threshold voltage determination and storage. This compensation process ensures consistent brightness across pixels by accounting for individual transistor variations. The method improves display performance by maintaining uniform light emission despite manufacturing inconsistencies in driving transistors.

Claim 14

Original Legal Text

14. The driving method according to claim 13 , further comprising: in a second collection stage, supplying the first voltage level signal to the second scanning signal line and the light-emitting signal line, supplying the second voltage level signal to the first scanning signal line, supplying the first initialization signal to the data line, and supplying the reference voltage signal to the second reference voltage signal line, wherein in the second pixel driving circuit, the first voltage signal line is configured to charge a first electrode of a driving transistor and the data line is configured to collect a voltage of the first electrode of the driving transistor, thereby determining and storing a threshold voltage of the driving transistor in the second pixel driving circuit.

Plain English Translation

This invention relates to a driving method for a pixel circuit in a display device, specifically addressing the challenge of accurately compensating for threshold voltage variations in driving transistors to improve display uniformity. The method involves a multi-stage process to initialize and stabilize the pixel circuit before active driving. In a first collection stage, a first voltage level signal is applied to a second scanning signal line and a light-emitting signal line, while a second voltage level signal is applied to a first scanning signal line. A first initialization signal is supplied to a data line, and a reference voltage signal is applied to a second reference voltage signal line. This configuration allows a first voltage signal line to charge a first electrode of a driving transistor, and the data line collects the voltage of this electrode, enabling the determination and storage of the driving transistor's threshold voltage. In a second collection stage, similar signal configurations are applied, but the data line collects the voltage of the driving transistor's first electrode again, further refining the threshold voltage compensation. This iterative process ensures precise threshold voltage measurement and storage, enhancing display performance by mitigating variations in transistor characteristics. The method is particularly useful in organic light-emitting diode (OLED) displays where threshold voltage inconsistencies can degrade image quality.

Claim 15

Original Legal Text

15. The driving method according to claim 13 , further comprising: in a first data signal write-in stage, supplying the first voltage level signal to the first scanning signal line, supplying the second voltage level signal to the second scanning signal line and the light-emitting signal line, supplying the reference voltage signal to the first reference voltage signal line, and supplying a first data signal after the threshold voltage of the driving transistor in the first pixel driving circuit is compensated to the data line, such that in the first pixel driving circuit, the reference voltage signal is transmitted to a gate electrode of the driving transistor and the first data signal is transmitted to the first electrode of the driving transistor, and in a second data signal write-in stage, supplying the first voltage level signal to the second scanning signal line, supplying the second voltage level signal to the first scanning signal line and the light-emitting signal line, supplying the reference voltage signal to the second reference voltage signal line, and supplying a second data signal after a threshold voltage of the driving transistor in the second pixel driving circuit is compensated to the data line, such that in the second pixel driving circuit, the reference voltage signal is transmitted to a gate electrode of the driving transistor and the second data signal is transmitted to the first electrode of the driving transistor.

Plain English Translation

This invention relates to a driving method for an organic light-emitting diode (OLED) display panel, specifically addressing threshold voltage compensation in pixel driving circuits. The method involves two data signal write-in stages to independently control first and second pixel driving circuits within a display panel. In the first stage, a first voltage level signal is applied to a first scanning signal line, while a second voltage level signal is applied to a second scanning signal line and a light-emitting signal line. A reference voltage signal is supplied to a first reference voltage signal line, and a first data signal is transmitted to a data line after compensating for the threshold voltage of the driving transistor in the first pixel driving circuit. This ensures the reference voltage is transmitted to the gate electrode of the driving transistor, and the first data signal is transmitted to the first electrode of the driving transistor. In the second stage, the first voltage level signal is applied to the second scanning signal line, while the second voltage level signal is applied to the first scanning signal line and the light-emitting signal line. The reference voltage signal is supplied to a second reference voltage signal line, and a second data signal is transmitted to the data line after compensating for the threshold voltage of the driving transistor in the second pixel driving circuit. This ensures the reference voltage is transmitted to the gate electrode of the driving transistor, and the second data signal is transmitted to the first electrode of the driving transistor. The method ensures accurate threshold voltage compensation for each pixel driving circuit, improving display uniformity and performance.

Claim 16

Original Legal Text

16. The driving method according to claim 14 , further comprising: in a light-emitting stage, supplying the first voltage level to the first and the second scanning signal lines, and supplying the second voltage level signal to the light-emitting signal line, such that the light-emitting elements in the first and the second pixel driving circuits emit light based on the first data signal and the second data signal.

Plain English Translation

This invention relates to a driving method for a display panel, specifically addressing the challenge of efficiently controlling light emission in pixel circuits. The method involves a display panel with multiple pixel driving circuits, each connected to scanning signal lines and a light-emitting signal line. The driving method includes a light-emitting stage where a first voltage level is applied to both the first and second scanning signal lines, while a second voltage level signal is supplied to the light-emitting signal line. This configuration ensures that light-emitting elements in the pixel driving circuits emit light based on first and second data signals, enabling precise control of brightness and display quality. The method optimizes power consumption and improves uniformity in light emission across the display panel. The pixel driving circuits may include transistors and capacitors to store and process data signals, ensuring stable and accurate light emission. The driving method is particularly useful in high-resolution displays where precise timing and voltage control are critical for performance. By coordinating the voltage levels on the scanning and light-emitting signal lines, the method enhances the efficiency and reliability of the display panel's operation.

Patent Metadata

Filing Date

Unknown

Publication Date

October 29, 2019

Inventors

Dongxu XIANG
Yue LI
Dong QIAN
Zeyuan CHEN
Gang LIU
Renyuan ZHU
Tong WU

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